https://antoniuk.org/A personal blog by Juan Andrés Antoniuk. 2026-09-13T10:39:51-03:00 Juan Andrés Antoniuk https://antoniuk.org/ Jekyll © 2026 Juan Andrés Antoniuk /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-09-03T00:00:00-03:00 2026-09-03T18:55:34-03:00 https://antoniuk.org/posts/edge-core-data-three-clocks/ andresantoniuk

Building fluxrig has meant spending a lot of time on a narrow question: what happens between the moment a byte arrives on a socket and the moment something durable decides what it means. Those are two different jobs, and they want opposite things from the software doing them. The first has to answer now and is free to forget. The second has to remember everything and can take its time. Most of...

2026-08-01T00:00:00-03:00 2026-08-01T16:58:21-03:00 https://antoniuk.org/posts/fluxrig-payment-switch-iso8583/ andresantoniuk

fluxrig 0.7.0 is out, and the source is on GitHub, with the documentation here. It is the payment-switch release, and since that name promises far more than the release delivers, I would rather start by drawing the boundary than by listing features. What shipped The centrepiece is Conductor: a gear that routes each request across a tree of strategy nodes (failover, round_robin, least_loaded),...

2026-07-24T00:00:00-03:00 2026-07-24T00:00:00-03:00 https://antoniuk.org/posts/opensource-fintech-sero-fluxrig/ andresantoniuk

In the space of a few days, two posts from people I deeply respect sent me back in time. Daniel Goldman shared something that took me to 2014, to a wall covered in sticky notes where we spent hours arguing about a product we could not yet name. Looking at that photo now, I can still spot notes about IoT and M2M on the wall, threads I would keep pulling for years. Then Alejandro Revilla wrote ab...

2026-06-12T00:00:00-03:00 2026-06-13T11:23:29-03:00 https://antoniuk.org/posts/acp245-telematics-fluxrig/ andresantoniuk

Recently, I had the pleasure of speaking at a Tribu Latam event (you can read more about it here: ¿Quién controla al vigilante? Tecnología, privacidad y el desafío de los estados digitales). The discussion brought back a flood of memories from my days in automotive hardware, reminding me that while technology evolves, the fundamental challenges of sovereignty and protocol control remain exactly...

2026-04-26T00:00:00-03:00 2026-04-26T00:00:00-03:00 https://antoniuk.org/posts/open-source-journey-fluxrig/ andresantoniuk

It’s been quite a ride. Yesterday, I finally hit “public” on the fluxrig repository. While it feels like a new beginning, this release is actually the culmination of a journey that started exactly 27 years ago, in a very different technical landscape. 1999: The 486CORE Spark In July 1999, CompuLab introduced what was then the world’s smallest embedded PC: the 486CORE. It was a marvel of mini...